/** Proofs GPU - Space and Time's cryptographic proof algorithms on the CPU and GPU.
 *
 * Copyright 2023-present Space and Time Labs, Inc.
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *     http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
#include "sxt/ristretto/operation/compression.h"

#include "sxt/base/error/assert.h"
#include "sxt/curve21/type/element_p3.h"
#include "sxt/ristretto/base/byte_conversion.h"
#include "sxt/ristretto/type/compressed_element.h"

namespace sxt::rsto {
//--------------------------------------------------------------------------------------------------
// compress
//--------------------------------------------------------------------------------------------------
void compress(rstt::compressed_element& e_p, const c21t::element_p3& e) noexcept {
  rstb::to_bytes(e_p.data(), e);
}

//--------------------------------------------------------------------------------------------------
// decompress
//--------------------------------------------------------------------------------------------------
void decompress(c21t::element_p3& e_p, const rstt::compressed_element& e) noexcept {
  rstb::from_bytes(e_p, e.data());
}

//--------------------------------------------------------------------------------------------------
// batch_compress
//--------------------------------------------------------------------------------------------------
void batch_compress(basct::span<rstt::compressed_element> ex_p,
                    basct::cspan<c21t::element_p3> ex) noexcept {
  SXT_DEBUG_ASSERT(ex_p.size() == ex.size());
  for (size_t i = 0; i < ex.size(); ++i) {
    compress(ex_p[i], ex[i]);
  }
}
} // namespace sxt::rsto
